Elvis vs. M. Jackson: Who has More Albums? Classification and Identification of Elements in Comparative Questions.

International Conference on Language Resources and Evaluation (LREC)(2022)

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摘要
Comparative Question Answering (cQA) is the task of providing concrete and accurate responses to queries such as: "Is Lyft cheaper than a regular taxi?" or "What makes a mortgage different from a regular loan?". In this paper, we propose two new open-domain real-world datasets for identifying and labeling comparative questions. While the first dataset contains instances of English questions labeled as comparative vs. non-comparative, the second dataset provides additional labels including the objects and the aspects of comparison. We conduct several experiments that evaluate the soundness of our datasets. The evaluation of our datasets using various classifiers show promising results that reach close-to-human results on a binary classification task with a neural model using ALBERT embeddings. When approaching the unsupervised sequence labeling task, some headroom remains.
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关键词
Comparative Question Answering, Labeling, Classification
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